20221111011001 has 16 divisors (see below), whose sum is σ = 21574646579200. Its totient is φ = 18896948308368.

The previous prime is 20221111010927. The next prime is 20221111011019. The reversal of 20221111011001 is 10011011112202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20221111011001 - 2⁷ = 20221111010873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221111011041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4565175 + ... + 7828348.

It is an arithmetic number, because the mean of its divisors is an integer number (1348415411200).

Almost surely, 2^{20221111011001} is an apocalyptic number.

It is an amenable number.

20221111011001 is a deficient number, since it is larger than the sum of its proper divisors (1353535568199).

20221111011001 is a wasteful number, since it uses less digits than its factorization.

20221111011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12394708.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20221111011001 its reverse (10011011112202), we get a palindrome (30232122123203).

The spelling of 20221111011001 in words is "twenty trillion, two hundred twenty-one billion, one hundred eleven million, eleven thousand, one".